package com.csp.mingyue.common.oss.factory;

import cn.hutool.core.util.StrUtil;
import cn.hutool.json.JSONUtil;
import com.csp.mingyue.common.oss.constant.OssConstant;
import com.csp.mingyue.common.oss.core.OssClient;
import com.csp.mingyue.common.oss.exception.OssException;
import com.csp.mingyue.common.oss.support.OssProperties;
import com.csp.mingyue.common.redis.utils.RedisUtils;
import lombok.extern.slf4j.Slf4j;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

/**
 * 文件上传 Factory
 *
 * @author Strive
 */
@Slf4j
public class OssFactory {

	private static final Map<String, OssClient> CLIENT_CACHE = new ConcurrentHashMap<>();

	/**
	 * 获取默认实例
	 */
	public static OssClient instance() {
		// 获取redis 默认类型
		String configKey = RedisUtils.getCacheObject(OssConstant.DEFAULT_CONFIG_KEY);
		if (StrUtil.isEmpty(configKey)) {
			throw new OssException("文件存储服务类型无法找到!");
		}
		return instance(configKey);
	}

	/**
	 * 根据类型获取实例
	 */
	public static OssClient instance(String configKey) {
		String json = RedisUtils.getCacheMapValue(OssConstant.SYS_OSS_CONFIG, configKey);
		if (json == null) {
			throw new OssException("系统异常, '" + configKey + "'配置信息不存在!");
		}
		OssProperties properties = JSONUtil.toBean(json, OssProperties.class);
		OssClient client = CLIENT_CACHE.get(configKey);
		if (client == null) {
			CLIENT_CACHE.put(configKey, new OssClient(configKey, properties));
			log.info("创建OSS实例 key => {}", configKey);
			return CLIENT_CACHE.get(configKey);
		}
		// 配置不相同则重新构建
		if (!client.checkPropertiesSame(properties)) {
			CLIENT_CACHE.put(configKey, new OssClient(configKey, properties));
			log.info("重载OSS实例 key => {}", configKey);
			return CLIENT_CACHE.get(configKey);
		}
		return client;
	}

}
